A system and method for resource processing of river and lake sediments

Abstract

The present invention belongs to the technical field of river and lake bottom mud treatment, and discloses a river and lake bottom mud resource treatment system and method, including a material blocking mechanism, the material blocking mechanism includes a baffle, and both sides of the baffle are fixedly connected with a first sliding rod; a river and lake bottom mud resource treatment method, the treatment method is as follows: S1, first placing a collecting device at the bottom of a water outlet and a bottom of a material outlet; the present invention facilitates the dehydration of sludge by pressure by setting the coordination of structures such as baffles and water outlets, the sludge transported to the baffle gradually increases, the interaction force between particles in the sludge also increases, the water in the sludge is squeezed out by pressure and discharged through the water outlet, the water content of the sludge in the discharge chamber is gradually reduced under continuous pressurization by the movement of the baffle, the solid content of the sludge is increased, the solid and liquid components are effectively separated, and the solid components are formed into sludge blocks, which is conducive to the subsequent implementation of its resource utilization.

Description

Technical Field

[0001] The invention belongs to the technical field of river and lake bottom mud treatment, and specifically relates to a river and lake bottom mud resource treatment system and method. Background Art

[0002] River and lake sediments, as the product of water self-regulation, are rich in organic matter, nutrients and pollutants. Long-term accumulation not only affects the circulation and storage capacity of water bodies, but also releases harmful substances, affecting water quality and ecological balance. However, the solid part of the sludge can be converted into biofertilizer through anaerobic fermentation or composting, and can also be converted into electrical energy and thermal energy through technologies such as microbial fuel cells. The liquid part can recover nutrients such as nitrogen and phosphorus through chemical reagents, and heavy metals and other minerals can be extracted from it. After purification, it can be used for irrigation and aquaculture, so the sludge needs to be separated into solid and liquid and treated separately.

[0003] Most of the existing river and lake bottom mud resource treatment devices use filter presses to separate the solid and liquid of the sludge. Not only does the separation time take a long time, but the device also needs to be cleaned after use before it can be used again. It is impossible to perform continuous solid-liquid separation on a large amount of sludge. Therefore, a river and lake bottom mud resource treatment device is proposed. Summary of the invention

[0004] In order to solve the problem proposed in the above background technology that most of the solid-liquid separation of sludge is carried out by filter press, which not only takes a long time to separate, but also requires the device to be cleaned after use before it can be used again, and it is impossible to perform continuous solid-liquid separation on a large amount of sludge, the present invention provides a river and lake bottom mud resource processing system and method.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a river and lake sediment resource processing system, comprising the following contents: Silt collection module: Silt is taken out and collected from the bottom of rivers and lakes through the silt extraction device; Solid-liquid separation module: Use mechanical structure to separate solids and water in sludge, dehydrate it and prepare for subsequent treatment; Organic matter degradation module: Use microorganisms to decompose organic matter in the solid part of sludge to generate electricity and harmless products; Nutrient recovery module: Apply chemical reagents to recover nutrients in the liquid part of the sludge, prepare fertilizers, and extract heavy metals and other minerals from it; Water purification and return flow module: ensures water quality meets standards through deep filtration and disinfection, and can be used for agricultural irrigation or ecological water replenishment; Energy and heat recovery module: Recover the electrical energy generated by microbial decomposition of organic matter and use it for system self-use or external transmission.

[0006] A river and lake bottom mud resource processing device comprises a material blocking mechanism, the material blocking mechanism is arranged inside a main body mechanism, a material cutting mechanism is arranged inside the main body mechanism, a protection mechanism is arranged inside the main body mechanism, the material cutting mechanism is located above the material blocking mechanism, and the protection mechanism is located on the side of the material blocking mechanism; The material blocking mechanism includes a baffle, a first sliding rod is fixedly connected to both sides of the baffle, a second sliding rod is fixedly connected to both sides of the baffle, a rotating rod is fixedly connected to the baffle, a first spring is fixedly connected to the side of the baffle close to the rotating rod, an end of the first spring away from the rotating rod is fixedly connected to the bottom of the slider, two limit blocks are fixedly connected to the top of the slider, and an end of the slider away from the baffle is fixedly connected to the second spring and two support rods.

[0007] Preferably, the first sliding rod is located above the second sliding rod, the rotating rod is located inside the first spring, the end of the rotating rod away from the baffle passes through the bottom of the slider and extends to the top of the slider, the support rod is located inside the second spring, and the slider is located on the side of the baffle close to the rotating rod.

[0008] Preferably, the main mechanism includes a main shell, a feed port is provided on the top of the main shell, a feed cavity is provided inside the main shell, a discharge port is provided at the bottom of the main shell, an end of the main shell away from the feed cavity is fixedly connected to a motor, a spiral rod is rotatably connected to the motor, a discharge chamber is provided above the feed cavity, a first slide groove and an arc groove are provided on both sides of the inner wall of the internal discharge chamber of the main shell, two limit grooves are provided on the top of the inner wall of the discharge chamber, a plurality of water outlet holes are evenly provided at the bottom of the main shell, and a small hole is provided at the top of the main shell.

[0009] Preferably, the spiral rod passes through the surface of the main shell and extends to the interior of the feed cavity, the spiral rod is rotatably connected to the feed cavity, the feed port is communicated with the feed cavity, the discharge chamber is located on the side of the feed cavity away from the motor, the first slide groove is located above the arc groove, the small hole passes through the top of the main shell and extends to the interior of the discharge chamber, the small hole is located between two limit grooves, and several water outlet holes pass through the bottom of the main shell and extend to the interior of the discharge chamber and the feed cavity respectively. The size of the cross-section of the discharge chamber is larger than that of the cross-section of the feed cavity, the arc groove is divided into two sections, a horizontal section and an arc section, the section of the arc groove located below the first slide groove is the horizontal section, and the arc section is located on the side of the horizontal section away from the baffle.

[0010] Preferably, the rotating rod is located on the side of the baffle away from the spiral rod, the baffle is located on the side of the spiral rod away from the motor, the first sliding rod is slidably connected to the first sliding groove, the size of the baffle is adapted to the size of the discharge chamber, the second sliding rod is slidably connected to the arc groove, the size of the small hole is adapted to the size of the rotating rod away from the baffle end, the limit block is slidably connected to the limit groove, the slider is elastically connected to the inner wall of the discharge chamber through a second spring, and the support rod passes through the inner wall of the discharge chamber and extends to the side of the main shell away from the motor.

[0011] Preferably, the cutting mechanism includes a hydraulic cylinder, a hydraulic rod is slidably connected inside the hydraulic cylinder, a bevel block is fixedly connected to the bottom of the hydraulic rod, the bottom of the bevel block is abutted against the rotating plate, the end of the rotating plate away from the bevel block is fixedly connected to a rotating shaft, and both ends of the rotating shaft are fixedly connected to volute springs.

[0012] Preferably, the bottom of the hydraulic cylinder is fixedly connected to the top of the main shell, the bottom of the hydraulic rod passes through the top of the main shell and extends to the top of the discharge bin, the rotating shaft is rotatably connected to the inner wall of the main shell, the two ends of the rotating shaft are elastically connected to the inner wall of the main shell through a volute spring, and the end of the rotating plate close to the inclined block is located above the baffle.

[0013] Preferably, the protective mechanism includes two second slide grooves opened inside the main shell, and a slide plate is slidably connected inside the second slide grooves. The slide plate is elastically connected to the inner wall of the second slide groove through a third spring. The two second slide grooves are respectively located on both sides of the feed cavity, and one end of the slide plate away from the third spring passes through the inner wall of the second slide groove and extends to the interior of the discharge chamber, and the end of the slide plate close to the discharge chamber is against the end of the baffle away from the slider.

[0014] A method for processing river and lake sediment resources, the processing method is as follows: S1. In the non-working state, the scroll spring is in a compressed state. At this time, the rotating plate is against the bottom of the inclined block under the action of the scroll spring elastic force and is in a horizontal state. At the same time, the third spring is also in a compressed state, so that the end of the slide away from the third spring is against the baffle. When the device is working, firstly, the collecting devices are placed at the bottom of the water outlet and the bottom of the discharge port, and then the collected and filtered sludge is poured into the feed cavity from the feed port, and at the same time, the motor is started to rotate the screw rod. The rotation of the screw rod will transport the sludge in the feed cavity toward the baffle through the paddle blades, so that the sludge squeezes the baffle. In this process, part of the water in the sludge will be discharged to the inside of the collecting device at the bottom of the feed cavity through the water outlet at the bottom of the feed cavity; S2. As the sludge transported to the baffle increases, the interaction force between the particles in the sludge will also increase, and the water in the sludge will be squeezed out by pressure and discharged through the water outlet. At the same time, the pressure on the baffle will also increase, so that the baffle moves in the direction close to the discharge port under the push of the sludge, so that the first slide bar slides inside the first slide groove, and the second slide bar slides in the horizontal section of the arc groove. At the same time, the rotating rod will drive the slider to move, so that the limit block on the slider slides between the limit groove and the limit groove, and squeeze the second spring, and the end of the rotating rod away from the baffle moves to the bottom of the small hole and aligns with it. At the same time, the slide plate will always be against the side of the baffle away from the slide plate under the action of the elastic force of the third spring, and the part of the first slide groove and the arc groove located on the side of the baffle plate close to the slide plate is blocked. When the baffle drives the first slide bar to resist the inner wall of the first slide groove, the second slide bar moves to the connection between the horizontal section of the arc groove and the arc section. At this time, the water content of the sludge in the discharge chamber is gradually reduced under continuous pressure to form a sludge block, thereby realizing solid-liquid separation. S3. When the sludge is continuously transported from the feeding cavity to the discharge chamber, the sludge squeezes the baffle plate, causing the second slide bar on the side of the baffle plate to slide with the arc section of the arc groove, causing the baffle plate and the first slide bar to rotate toward the direction close to the slider and squeeze the first spring. At this time, the rotating rod will extend through the small hole to the top of the main shell, and open the channel of the discharge port. Subsequently, the hydraulic rod will be moved downward by the hydraulic cylinder, driving the inclined block downward. The downward movement of the inclined block will squeeze the rotating plate through the inclined surface, causing the rotating plate to rotate downward and further compress the volute spring. At this time, the rotating plate and the bottom of the inclined block cooperate to cut the sludge block, and as the inclined block moves, the rotating plate will push the sludge to be discharged from the discharge port. , and the inclined block will block the sludge inside the feeding chamber, so that the sludge accumulates inside the feeding chamber and is gradually dehydrated by pressure. When the sludge inside the discharge chamber is discharged, the baffle will rotate downward to a vertical state under the action of the first spring force to block the discharge port, and at the same time, the slider will drive the baffle to move in the direction close to the rotating plate and resist it under the action of the second spring force, and then the hydraulic rod will move upward and reset through the hydraulic cylinder. At this time, the rotating plate will rotate to a horizontal position under the action of the scroll spring force and resist the bottom of the inclined block, and the baffle will also move in the direction close to the spiral rod under the action of the second spring force and resist the sludge again; S4. Finally, repeat the above steps S2 and S3 to continuously separate the solid and liquid from the sludge.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention facilitates dehydration of sludge by pressure by arranging the cooperation of structures such as baffles and water outlet holes, and the sludge transported to the baffle gradually increases, and the interaction force between the particles of the sludge also increases, and the water in the sludge is squeezed out by pressure and discharged through the water outlet holes. The water content of the sludge in the discharge chamber is gradually reduced under continuous pressure by the movement of the baffle, thereby increasing the solid content of the sludge, effectively separating the solid and liquid components, and forming the solid components into sludge blocks, realizing solid-liquid separation, and facilitating the subsequent resource utilization thereof. At the same time, in the process of the sludge being transported by the spiral rod, part of the water in the sludge will be discharged through the water outlet holes at the bottom of the feeding chamber, so that the device can continuously dehydrate a large amount of sludge; The invention facilitates the unloading of the sludge block by arranging the cooperation of structures such as the inclined block and the rotating plate. The hydraulic cylinder drives the hydraulic rod downward to drive the inclined block downward. The downward movement of the inclined block will squeeze the rotating plate through the inclined surface to make the rotating plate rotate downward and further compress the volute spring. At this time, the rotating plate and the bottom of the inclined block cooperate to cut the sludge block. With the movement of the inclined block, the rotating plate will push the sludge to be discharged from the discharge port, and the inclined block will block the sludge inside the feeding cavity, so that the sludge accumulates inside the feeding cavity and the part is gradually dehydrated by pressure, thereby avoiding the situation that the sludge with low solid content is discharged from the discharge port when the sludge block with high solid content is unloaded, so that the device can process the sludge in sections and improve the solid-liquid separation effect. The present invention facilitates the shielding of the first slide groove and the arc groove by arranging the cooperation of structures such as the slide plate and the baffle plate. The slide plate will always be against the side of the baffle plate away from the slider under the action of the elastic force of the third spring, thereby shielding the first slide groove and the arc groove located on the side of the baffle plate close to the slide plate, thereby preventing silt from entering the first slide groove and the arc groove, making it difficult to clean and affecting the subsequent resetting of the baffle plate. This facilitates the continuous operation of the device, reduces the frequency of shutdown for cleaning, and improves the efficiency of solid-liquid separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the main mechanism of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of the cross-sectional structure of the protection mechanism of the present invention; Figure 5 This is a schematic diagram of the cooperation between the limiting block and the limiting groove of the present invention; Figure 6 It is a schematic diagram of the structural relationship between the slide plate and the baffle of the present invention.

[0017] In the figure: 1. material blocking mechanism; 101. baffle; 102. first slide bar; 103. second slide bar; 104. rotating rod; 105. first spring; 106. slider; 107. limit block; 108. second spring; 109. support rod; 2. main body mechanism; 201. main body shell; 202. feed port; 203. feeding cavity; 204. discharge port; 205. motor; 206. screw rod; 207. first slide groove; 208. arc groove; 209. limit groove; 210. small hole; 211. discharge compartment; 212. water outlet; 3. cutting mechanism; 301. hydraulic cylinder; 302. hydraulic rod; 303. inclined block; 304. rotating plate; 305. rotating shaft; 306. scroll spring; 4. protection mechanism; 401. second slide groove; 402. slide plate; 403. third spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] A river and lake bottom mud resource processing system, comprising the following contents: Silt collection module: Silt is taken out and collected from the bottom of rivers and lakes through the silt extraction device; Solid-liquid separation module: Use mechanical structure to separate solids and water in sludge, dehydrate it and prepare for subsequent treatment; Organic matter degradation module: Use microorganisms to decompose organic matter in the solid part of sludge to generate electricity and harmless products; Nutrient recovery module: Apply chemical reagents to recover nutrients in the liquid part of the sludge, prepare fertilizers, and extract heavy metals and other minerals from it; Water purification and return flow module: ensures water quality meets standards through deep filtration and disinfection, and can be used for agricultural irrigation or ecological water replenishment; Energy and heat recovery module: Recover the electrical energy generated by microbial decomposition of organic matter and use it for system self-use or external transmission.

[0020] like Figures 1 to 6 As shown, the present invention provides a river and lake bottom mud resource processing device, comprising a material blocking mechanism 1, the material blocking mechanism 1 is arranged inside a main body mechanism 2, a material cutting mechanism 3 is arranged inside the main body mechanism 2, a protection mechanism 4 is arranged inside the main body mechanism 2, the material cutting mechanism 3 is located above the material blocking mechanism 1, and the protection mechanism 4 is located on the side of the material blocking mechanism 1; The material blocking mechanism 1 includes a baffle 101, both sides of the baffle 101 are fixedly connected with a first slide bar 102, both sides of the baffle 101 are fixedly connected with a second slide bar 103, the baffle 101 is fixedly connected with a rotating rod 104, the side of the baffle 101 close to the rotating rod 104 is fixedly connected with a first spring 105, the end of the first spring 105 away from the rotating rod 104 is fixedly connected to the bottom of a slider 106, the top of the slider 106 is fixedly connected with two limit blocks 107, and the end of the slider 106 away from the baffle 101 is fixedly connected with a second spring 108 and two support rods 109.

[0021] The first sliding rod 102 is located above the second sliding rod 103, the rotating rod 104 is located inside the first spring 105, the end of the rotating rod 104 away from the baffle 101 passes through the bottom of the slider 106 and extends to the top of the slider 106, the support rod 109 is located inside the second spring 108, and the slider 106 is located on the side of the baffle 101 close to the rotating rod 104.

[0022] The main body mechanism 2 includes a main body shell 201, a feed port 202 is arranged on the top of the main body shell 201, a feed cavity 203 is arranged inside the main body shell 201, a discharge port 204 is opened at the bottom of the main body shell 201, a motor 205 is fixedly connected to one end of the main body shell 201 away from the feed cavity 203, a screw rod 206 is rotatably connected to the motor 205, a discharge chamber 211 is arranged above the feed cavity 203, first slide grooves 207 and arc grooves 208 are opened on both sides of the inner wall of the internal discharge chamber 211 of the main body shell 201, two limit grooves 209 are opened on the top of the inner wall of the discharge chamber 211, a plurality of water outlet holes 212 are evenly opened at the bottom of the main body shell 201, and a small hole 210 is opened at the top of the main body shell 201.

[0023] The screw rod 206 penetrates the surface of the main shell 201 and extends to the inside of the feed chamber 203. The screw rod 206 is rotatably connected to the feed chamber 203. The feed inlet 202 is communicated with the feed chamber 203. The discharge chamber 211 is located on the side of the feed chamber 203 away from the motor 205. The first slide groove 207 is located above the arc groove 208. The small hole 210 penetrates the top of the main shell 201 and extends to the inside of the discharge chamber 211. The small hole 210 is located between the two limit grooves 209. A plurality of water outlet holes 212 penetrate the bottom of the main shell 201 and extend to the inside of the discharge chamber 211 and the feed chamber 203 respectively. The size of the cross section of the discharge chamber 211 is larger than that of the cross section of the feed chamber 203. The arc groove 208 is divided into two sections, a horizontal section and an arc section. The arc groove 208 is located at the first slide groove 207. The lower section is a horizontal section, the arc section is located on the side of the horizontal section away from the baffle 101, the rotating rod 104 is located on the side of the baffle 101 away from the screw rod 206, the baffle 101 is located on the side of the screw rod 206 away from the motor 205, the first slide bar 102 is slidably connected to the first slide groove 207, the size of the baffle 101 is adapted to the size of the discharge chamber 211, the second slide bar 103 is slidably connected to the arc groove 208, the size of the small hole 210 is adapted to the size of the end of the rotating rod 104 away from the baffle 101, the limit block 107 is slidably connected to the limit groove 209, the slider 106 is elastically connected to the inner wall of the discharge chamber 211 through the second spring 108, and the support rod 109 passes through the inner wall of the discharge chamber 211 and extends to the side of the main shell 201 away from the motor 205.

[0024] The above scheme is adopted: the baffle 101 and the water outlet 212 are arranged to cooperate with each other, thereby facilitating the dehydration of the sludge by pressure, and the sludge transported to the baffle 101 gradually increases, and the interaction force between the particles of the sludge will also increase, and the water in the sludge will be squeezed out by pressure and discharged through the water outlet 212. At the same time, the pressure on the baffle 101 will also increase, so that the baffle 101 moves towards the direction close to the discharge port 204 under the push of the sludge, so that the first slide bar 102 is in the first slide groove 20 7, the second slide bar 103 slides in the horizontal section of the arc groove 208, and the rotating rod 104 drives the slider 106 to move, so that the limit block 107 on the slider 106 slides between the limit groove 209 and the second spring 108 is pressed, and the end of the rotating rod 104 away from the baffle 101 moves to the bottom of the small hole 210 and aligns with it, and the slide plate 402 is always against the side of the baffle 101 away from the slide block 106 under the action of the elastic force of the third spring 403, so as to adjust the first slide groove 207 and the arc groove 209. The groove 208 is located on the side of the baffle 101 close to the slide plate 402 to block the sludge from entering the first chute 207 and the arc groove 208, which makes it difficult to clean and affects the subsequent reset of the baffle 101. When the baffle 101 drives the first slide bar 102 to abut against the inner wall of the first chute 207, the second slide bar 103 moves to the connection between the horizontal section and the arc section of the arc groove 208. At this time, the water content of the sludge in the discharge chamber 211 is gradually reduced under continuous pressure, thereby increasing the solid content of the sludge. The amount of sludge can be effectively separated from the solid and liquid components, so that the solid components form sludge blocks, and solid-liquid separation is achieved, which is conducive to the subsequent implementation of its resource utilization. At the same time, the motor 205 is started to rotate the screw rod 206. The rotation of the screw rod 206 will transport the sludge inside the feeding chamber 203 to the direction close to the baffle 101 through the paddle blades, so that the sludge squeezes the baffle 101. In this process, part of the water in the sludge will be discharged through the water outlet 212 at the bottom of the feeding chamber 203, so that the device can continuously dehydrate a large amount of sludge.

[0025] like Figure 2 , Figure 3 and Figure 6As shown, the cutting mechanism 3 includes a hydraulic cylinder 301, and a hydraulic rod 302 is slidably connected inside the hydraulic cylinder 301. The bottom of the hydraulic rod 302 is fixedly connected to an inclined block 303, and the bottom of the inclined block 303 is abutted against the rotating plate 304. The end of the rotating plate 304 away from the inclined block 303 is fixedly connected to a rotating shaft 305, and both ends of the rotating shaft 305 are fixedly connected to a volute spring 306. The bottom of the hydraulic cylinder 301 is fixedly connected to the top of the main shell 201, and the bottom of the hydraulic rod 302 passes through the top of the main shell 201 and extends to the top of the discharge chamber 211. The rotating shaft 305 is rotatably connected to the inner wall of the main shell 201, and the two ends of the rotating shaft 305 are elastically connected to the inner wall of the main shell 201 through the volute spring 306. The end of the rotating plate 304 close to the inclined block 303 is located above the baffle 101.

[0026] The above scheme is adopted: the cooperation of structures such as the inclined block 303 and the rotating plate 304 is set to facilitate the unloading of the sludge block. The hydraulic rod 302 is moved downward by the hydraulic cylinder 301, driving the inclined block 303 downward. The downward movement of the inclined block 303 will squeeze the rotating plate 304 through the inclined surface, causing the rotating plate 304 to rotate downward and further compress the volute spring 306. At this time, the rotating plate 304 and the bottom of the inclined block 303 cooperate to cut the sludge block, and as the inclined block 303 moves, the rotating plate 304 will push the sludge to be discharged from the discharge port 204, and the inclined block 303 will block the sludge inside the feeding cavity 203, so that the sludge accumulates inside the feeding cavity 203 and the part is gradually dehydrated by pressure, thereby avoiding the situation where the sludge with low solid content is discharged from the discharge port 204 when the sludge block with high solid content is unloaded, so that the device can process the sludge in sections and improve the solid-liquid separation effect.

[0027] like Figure 4 As shown, the protective mechanism 4 includes two second slide grooves 401 opened inside the main shell 201, and the second slide grooves 401 are slidably connected inside with a slide plate 402, and the slide plate 402 is elastically connected to the inner wall of the second slide groove 401 through a third spring 403. The two second slide grooves 401 are respectively located on both sides of the feeding cavity 203, and one end of the slide plate 402 away from the third spring 403 passes through the inner wall of the second slide groove 401 and extends to the inside of the discharge chamber 211, and the end of the slide plate 402 close to the discharge chamber 211 is against the end of the baffle 101 away from the slider 106.

[0028] The above scheme is adopted: the cooperation of structures such as the slide plate 402 and the baffle plate 101 is set, so as to facilitate the shielding of the first slide groove 207 and the arc groove 208. The slide plate 402 will always be against the side of the baffle plate 101 away from the slider 106 under the action of the elastic force of the third spring 403, and the first slide groove 207 and the arc groove 208 located on the side of the baffle plate 101 close to the slide plate 402 are shielded, so as to prevent silt from entering the first slide groove 207 and the arc groove 208, which will cause difficulty in cleaning and affect the subsequent resetting of the baffle plate 101, so as to facilitate the continuous operation of the device, reduce the frequency of shutdown for cleaning, and improve the solid-liquid separation efficiency.

[0029] A method for resource processing of river and lake bottom mud, the processing method is as follows: S1. In the non-working state, the volute spring 306 is in a compressed state. At this time, the rotating plate 304 is against the bottom of the inclined block 303 under the action of the elastic force of the volute spring 306 and is in a horizontal state. At the same time, the third spring 403 is also in a compressed state, so that the end of the slide plate 402 away from the third spring 403 is against the baffle 101. When the device is working, firstly, a collecting device is placed at the bottom of the water outlet 212 and the bottom of the discharge port 204, and then the collected and filtered sludge is poured into the feed cavity 203 from the feed inlet 202. At the same time, the motor 205 is started to rotate the screw rod 206. The rotation of the screw rod 206 will transport the sludge in the feed cavity 203 toward the baffle 101 through the paddle blades, so that the sludge squeezes the baffle 101. In this process, part of the water in the sludge will be discharged to the inside of the collecting device at the bottom through the water outlet 212 at the bottom of the feed cavity 203; S2. As the sludge transported to the baffle 101 gradually increases, the interaction force between the particles of the sludge will also increase, and the water in the sludge will be squeezed out by pressure and discharged through the water outlet 212. At the same time, the pressure on the baffle 101 will also increase, so that the baffle 101 moves toward the discharge port 204 under the push of the sludge, so that the first slide bar 102 slides inside the first slide groove 207, and the second slide bar 103 slides in the horizontal section of the arc groove 208. At the same time, the rotating rod 104 will drive the slider 106 to move, so that the limit block 107 on the slider 106 slides between the limit groove 209 and squeezes the second spring 108, and The end of the rotating rod 104 away from the baffle 101 moves to the bottom of the small hole 210 and aligns with it. At the same time, the slide plate 402 will always abut against the side of the baffle 101 away from the slider 106 under the action of the elastic force of the third spring 403, and the first slide groove 207 and the arc groove 208 are located on the side of the baffle 101 close to the slide plate 402. The first slide bar 102 is abutted against the inner wall of the first slide groove 207 by the baffle 101, and the second slide bar 103 moves to the connection between the horizontal section and the arc section of the arc groove 208. At this time, the moisture content of the sludge in the discharge chamber 211 is gradually reduced under continuous pressure to form a sludge block, thereby realizing solid-liquid separation. S3. When the inside of the feeding cavity 203 continues to transport the sludge into the discharge chamber 211, the sludge squeezes the baffle 101, causing the second slide bar 103 on the side of the baffle 101 to slide with the arc segment of the arc groove 208, so that the baffle 101 and the first slide bar 102 are centered and rotated in the direction close to the slider 106 and squeeze the first spring 105. At this time, the rotating rod 104 will extend to the top of the main shell 201 through the small hole 210, and open the channel of the discharge port 204. Subsequently, the hydraulic rod 302 is moved downward by the hydraulic cylinder 301, driving the inclined block 303 downward. The downward movement of the inclined block 303 will squeeze the rotating plate 304 through the inclined surface, causing the rotating plate 304 to rotate downward and further compress the volute spring 306. At this time, the rotating plate 304 and the bottom of the inclined block 303 cooperate to cut the sludge block, and as the inclined block 303 moves, the rotating plate 304 will push the sludge The sludge in the feeding chamber 203 is discharged from the discharge port 204, and the inclined block 303 blocks the sludge in the feeding chamber 203, so that the sludge accumulates in the feeding chamber 203 and is gradually dehydrated by pressure. When the sludge in the discharge chamber 211 is discharged, the baffle 101 rotates downward to a vertical state under the elastic force of the first spring 105 to block the discharge port 204, and at the same time, the slider 106 drives the baffle 101 to move toward the rotating plate 304 and abut against it under the elastic force of the second spring 108, and then the hydraulic rod 302 is moved upward and reset by the hydraulic cylinder 301. At this time, the rotating plate 304 rotates to a horizontal position under the elastic force of the spiral spring 306 and abuts against the bottom of the inclined block 303, and the baffle 101 also moves toward the spiral rod 206 under the elastic force of the second spring 108 and abuts against the sludge again. S4. Finally, repeat the above steps S2 and S3 to continuously separate the solid and liquid from the sludge.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A river and lake sediment resource processing system, characterized by: Includes the following: Silt collection module: Silt is taken out and collected from the bottom of rivers and lakes through the silt extraction device; Solid-liquid separation module: Use mechanical structure to separate solids and water in sludge, dehydrate it and prepare for subsequent treatment; Organic matter degradation module: Use microorganisms to decompose organic matter in the solid part of sludge to generate electricity and harmless products; Nutrient recovery module: Apply chemical reagents to recover nutrients in the liquid part of the sludge, prepare fertilizers, and extract heavy metals and other minerals from it; Water purification and return flow module: ensures water quality meets standards through deep filtration and disinfection, and can be used for agricultural irrigation or ecological water replenishment; Energy and heat recovery module: Recover the electrical energy generated by microbial decomposition of organic matter and use it for system self-use or external transmission.

2. A river and lake sediment resource treatment device, applied to a river and lake sediment resource treatment system according to claim 1, characterized in that: The invention comprises a material blocking mechanism (1), wherein the material blocking mechanism (1) is arranged inside a main body mechanism (2), a material cutting mechanism (3) is arranged inside the main body mechanism (2), a protective mechanism (4) is arranged inside the main body mechanism (2), the material cutting mechanism (3) is located above the material blocking mechanism (1), and the protective mechanism (4) is located on the side of the material blocking mechanism (1); The material blocking mechanism (1) comprises a baffle (101), both sides of the baffle (101) are fixedly connected to a first sliding rod (102), both sides of the baffle (101) are fixedly connected to a second sliding rod (103), the baffle (101) is fixedly connected to a rotating rod (104), a first spring (105) is fixedly connected to a side of the baffle (101) close to the rotating rod (104), an end of the first spring (105) away from the rotating rod (104) is fixedly connected to the bottom of a sliding block (106), two limit blocks (107) are fixedly connected to the top of the sliding block (106), and a second spring (108) and two support rods (109) are fixedly connected to an end of the sliding block (106) away from the baffle (101).

3. The river and lake sediment resource processing device according to claim 2 is characterized in that: The first sliding rod (102) is located above the second sliding rod (103), the rotating rod (104) is located inside the first spring (105), one end of the rotating rod (104) away from the baffle (101) passes through the bottom of the slider (106) and extends to the top of the slider (106), the supporting rod (109) is located inside the second spring (108), and the slider (106) is located on a side of the baffle (101) close to the rotating rod (104).

4. The river and lake sediment resource processing device according to claim 2 is characterized in that: The main body mechanism (2) comprises a main body shell (201), a material inlet (202) is arranged at the top of the main body shell (201), a material delivery cavity (203) is arranged inside the main body shell (201), a material discharge port (204) is provided at the bottom of the main body shell (201), a motor (205) is fixedly connected to one end of the main body shell (201) away from the material delivery cavity (203), a screw rod (206) is rotatably connected to the motor (205), a material discharge chamber (211) is provided above the material delivery cavity (203), first sliding grooves (207) and arc grooves (208) are provided on both sides of the inner wall of the material discharge chamber (211) inside the main body shell (201), two limiting grooves (209) are provided on the top of the inner wall of the material discharge chamber (211), a plurality of water outlet holes (212) are evenly provided at the bottom of the main body shell (201), and a small hole (210) is provided at the top of the main body shell (201).

5. The river and lake sediment resource processing device according to claim 4 is characterized in that: The spiral rod (206) penetrates the surface of the main shell (201) and extends to the interior of the feed chamber (203); the spiral rod (206) is rotatably connected to the feed chamber (203); the feed inlet (202) is communicated with the feed chamber (203); the discharge chamber (211) is located on a side of the feed chamber (203) away from the motor (205); the first slide groove (207) is located above the arc groove (208); the small hole (210) penetrates the top of the main shell (201) and extends to the interior of the discharge chamber (211). The small hole (210) is located between the two limiting grooves (209), and a plurality of water outlet holes (212) penetrate the bottom of the main shell (201) and extend to the inside of the discharge chamber (211) and the feed chamber (203) respectively. The cross-sectional size of the discharge chamber (211) is larger than the cross-sectional size of the feed chamber (203). The arc groove (208) is divided into two sections, namely a horizontal section and an arc section. The section of the arc groove (208) located below the first slide groove (207) is the horizontal section, and the arc section is located on the side of the horizontal section away from the baffle (101).

6. The river and lake sediment resource processing device according to claim 4 is characterized in that: The rotating rod (104) is located on a side of the baffle (101) away from the spiral rod (206), and the baffle (101) is located on a side of the spiral rod (206) away from the motor (205). The first sliding rod (102) is slidably connected to the first sliding groove (207). The size of the baffle (101) is matched with the size of the discharge chamber (211). The second sliding rod (103) is slidably connected to the arc groove (208). The size of the small hole (210) is matched with the size of the end of the rotating rod (104) away from the baffle (101). The limiting block (107) is slidably connected to the limiting groove (209). The sliding block (106) is elastically connected to the inner wall of the discharge chamber (211) via the second spring (108). The supporting rod (109) penetrates the inner wall of the discharge chamber (211) and extends to the side of the main housing (201) away from the motor (205).

7. The river and lake sediment resource processing device according to claim 4 is characterized in that: The cutting mechanism (3) comprises a hydraulic cylinder (301), the interior of the hydraulic cylinder (301) is slidably connected to a hydraulic rod (302), the bottom of the hydraulic rod (302) is fixedly connected to an inclined block (303), the bottom of the inclined block (303) abuts against a rotating plate (304), one end of the rotating plate (304) away from the inclined block (303) is fixedly connected to a rotating shaft (305), and both ends of the rotating shaft (305) are fixedly connected to volute springs (306).

8. The river and lake sediment resource processing device according to claim 7 is characterized in that: The bottom of the hydraulic cylinder (301) is fixedly connected to the top of the main housing (201); the bottom of the hydraulic rod (302) passes through the top of the main housing (201) and extends to the top of the discharge chamber (211); the rotating shaft (305) is rotatably connected to the inner wall of the main housing (201); both ends of the rotating shaft (305) are elastically connected to the inner wall of the main housing (201) via a volute spring (306); and one end of the rotating plate (304) close to the inclined block (303) is located above the baffle (101).

9. The river and lake sediment resource processing device according to claim 7 is characterized in that: The protection mechanism (4) comprises two second slide grooves (401) provided inside the main body shell (201); a slide plate (402) is slidably connected inside the second slide grooves (401); the slide plate (402) is elastically connected to the inner wall of the second slide groove (401) via a third spring (403); the two second slide grooves (401) are respectively located on both sides of the feeding cavity (203); one end of the slide plate (402) away from the third spring (403) passes through the inner wall of the second slide groove (401) and extends to the inside of the discharge chamber (211); one end of the slide plate (402) close to the discharge chamber (211) abuts against one end of the baffle (101) away from the slider (106).

10. A method for recycling river and lake sediments, applied to a device for recycling river and lake sediments as claimed in claims 2-9, characterized in that: The processing method is as follows: S1. In a non-working state, the scroll spring (306) is in a compressed state. At this time, the rotating plate (304) is in a horizontal state under the action of the elastic force of the scroll spring (306). At the same time, the third spring (403) is also in a compressed state, so that the end of the slide plate (402) away from the third spring (403) is in abutment with the baffle (101). When the device is working, first, the collecting devices are placed at the bottom of the water outlet (212) and the bottom of the discharge port (204). Subsequently, the collected and filtered sludge is poured from the feed port (202) into the feed cavity (203), and at the same time, the motor (205) is started to rotate the screw rod (206). The rotation of the screw rod (206) transports the sludge in the feed cavity (203) toward the baffle (101) through the paddles, so that the sludge squeezes the baffle (101). During this process, part of the water in the sludge is discharged through the water outlet (212) at the bottom of the feed cavity (203) to the inside of the collection device at the bottom thereof; S2. As the amount of sludge transported to the baffle (101) gradually increases, the interaction force between the particles of the sludge also increases, and the water in the sludge is squeezed out by pressure and discharged through the water outlet (212). At the same time, the pressure on the baffle (101) also increases, so that the baffle (101) moves toward the discharge port (204) under the push of the sludge, so that the first slide bar (102) slides inside the first slide groove (207), and the second slide bar (103) slides in the horizontal section of the arc groove (208). At the same time, the rotating rod (104) drives the slider (106) to move, so that the limit block (107) on the slider (106) slides between the limit groove (209), and squeezes the second spring (108), and the rotating rod (104) drives the slider (106) to move. The end of the rod (104) away from the baffle (101) moves to the bottom of the small hole (210) and aligns with it. At the same time, the slide plate (402) will always abut against the side of the baffle (101) away from the slider (106) under the action of the elastic force of the third spring (403), thereby shielding the first slide groove (207) and the arc groove (208) located on the side of the baffle (101) close to the slide plate (402). When the baffle (101) drives the first slide rod (102) to abut against the inner wall of the first slide groove (207), the second slide rod (103) moves to the connection between the horizontal section and the arc section of the arc groove (208). At this time, the moisture content of the sludge in the discharge chamber (211) gradually decreases under continuous pressure, forming a sludge block, thereby achieving solid-liquid separation. S3. When the inside of the feeding cavity (203) continues to transport the sludge into the inside of the discharge chamber (211), the sludge squeezes the baffle (101), causing the second slide bar (103) on the side of the baffle (101) to slide with the arc section of the arc groove (208), so that the baffle (101) and the first slide bar (102) are rotated in a direction close to the slider (106) and squeeze the first spring (105). At this time, the rotating rod (104) passes through the small hole (210) and extends to the main housing (201). The hydraulic rod (302) is moved downward by the hydraulic cylinder (301), driving the inclined block (303) downward. The inclined block (303) moves downward and presses the rotating plate (304) through the inclined surface, causing the rotating plate (304) to rotate downward and further compressing the scroll spring (306). At this time, the rotating plate (304) and the bottom of the inclined block (303) cooperate to cut the sludge block. As the inclined block (303) moves, the rotating plate (304) The sludge is pushed out from the discharge port (204), and the inclined block (303) blocks the sludge inside the feed chamber (203), so that the sludge is accumulated inside the feed chamber (203) and the sludge is gradually dehydrated by pressure. When the sludge inside the discharge chamber (211) is discharged, the baffle (101) rotates downward to a vertical state under the elastic force of the first spring (105) to block the discharge port (204), and the slider (106) rotates downward under the elastic force of the second spring (108). The baffle plate (101) is driven to move towards the rotating plate (304) and abut against it, and then the hydraulic rod (302) is moved upward and reset by the hydraulic cylinder (301). At this time, the rotating plate (304) is rotated to a horizontal position and abuts against the bottom of the inclined block (303) under the action of the elastic force of the spiral spring (306), and the baffle plate (101) is also moved towards the spiral rod (206) and abuts against the silt again under the action of the elastic force of the second spring (108); S4. Finally, repeat the above steps S2 and S3 to continuously separate the solid and liquid from the sludge.

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